Here, bookmakers Paddy Power crunched the numbers to take a look at each Championship club and their net spend over the last decade – and there are some pretty shocking results.
However, not every second tier club has net spend in the minus column - scroll down and click through the pages to view the full club-by-club break down:
3. Birmingham City
Total net spend over the last 10 years: +£61,690,000 Photo: Mike Hewitt
4. Blackburn Rovers
Total net spend over the last 10 years: +£41,460,000 Photo: Ross Kinnaird
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